Modify the custom parameter parsing routines in:
xen/arch/x86/microcode.c
to indicate whether the parameter value was parsed successfully.
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Juergen Gross <jgr...@suse.com>
---
xen/arch/x86/microcode.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/xen/arch/x86/microcode.c b/xen/arch/x86/microcode.c
index 7558202efa..78ea6b53bd 100644
--- a/xen/arch/x86/microcode.c
+++ b/xen/arch/x86/microcode.c
@@ -73,15 +73,19 @@ void __init microcode_set_module(unsigned int idx)
* If the EFI has forced which of the multiboot payloads is to be used,
* no parsing will be attempted.
*/
-static void __init parse_ucode(char *s)
+static int __init parse_ucode(char *s)
{
+ const char *q = NULL;
+
if ( ucode_mod_forced ) /* Forced by EFI */
- return;
+ return 0;
if ( !strncmp(s, "scan", 4) )
ucode_scan = 1;
else
- ucode_mod_idx = simple_strtol(s, NULL, 0);
+ ucode_mod_idx = simple_strtol(s, &q, 0);
+
+ return (q && *q) ? -EINVAL : 0;
}
custom_param("ucode", parse_ucode);
--
2.12.3
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